My Facebook Was Hacked - Please Help Retrieve

Good afternoon, My Facebook account has been hacked, they have changed the e-Mail dress and I cannot access the phone numbers either. They have also hidden the account although I have the e-Mail which was originally linked and gives Me access to the login screen, although it only takes me to the 3 friends section where it blocks Me out as I am unsure of the 3 friends. [login to view URL] is the URL although would come Up with page not found. I have found the following address is being used for My account - oliharwood010@[login to view URL] If We can get hold of this and Locate it, then We could gain access. I am Wondering if Facebook API can be used as well? Is there someone on here who can get it back? Thank You!